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ANATOMICAL CHANGES IN FLOWER BUDS OF LETTUCE (LACTUCA SATIVA L.) TREATED WITH A GA 3 ‐SOLUTION FOR INDUCTION OF MALE STERILITY
Author(s) -
Eenink A. H.,
Vereijken A. L. J.
Publication year - 1978
Publication title -
acta botanica neerlandica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.871
H-Index - 87
eISSN - 1438-8677
pISSN - 0044-5983
DOI - 10.1111/j.1438-8677.1978.tb00280.x
Subject(s) - stamen , tapetum , pollen , sterility , biology , lactuca , botany , bud , horticulture , microspore
SUMMARY GA 3 spraying of lettuce induces male sterility. Different types of male sterile flowers developed: flowers with anthers containing some pollen grains which were not liberated (MS1) and flowers with only rudimentary anthers or with no anthers at all (MS2). From anatomical studies it appeared that great differences occurred for the effect of GA 3 between flower buds, within buds between florets and within florets. Besides the developmental phase also the type of tissue has a certain influence. The lock‐up of pollen grains by remnants of tapetum possibly hampered nutrition and prevented liberation of pollen accounting for the occurrence of MS1 flowers. Buds without sporogenous tissue or with tumors instead might develop into MS2 flowers.